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In 2005 Keysight Technologies' facility at South Queensferry in the United Kingdom was the first calibration laboratory to be granted ISO/IEC 17025 accreditation for an internet-enabled technology to make measurements of complex reflection and transmission coefficient parameters.

Whether you are a novice or experienced user of Keysight test equipment, you may sometimes need more details to answer the question “How accurate are these measurements?” Learn more important details and download the following uncertainty calculators.